Learn CLOUDFORMATION with Real Code Examples

Provision S3 bucket with versioning and lifecycle rules

Deploy Lambda functions with API Gateway

Create VPC with subnets, route tables, and NAT gateways

Configure RDS database with security groups and backups

Automate IAM roles and policies for an application

Check CloudFormation stack events for errors

Validate template syntax using cfn-lint

Ensure IAM permissions allow resource creation

Review resource limits and quotas

Use Change Sets to preview updates before applying

Validate template syntax

Use Change Sets to review updates

Deploy to a sandbox account first

Unit test modularized templates with tools like Taskcat

Monitor events during deployment for errors

AWS Console - manual deployment

AWS CLI - cfn create-stack / update-stack

CloudFormation StackSets - multi-account deployment

CI/CD pipeline integration

SAM CLI for serverless deployments

AWS Management Console

AWS CLI

AWS SDKs (Python, Java, JavaScript, etc.)

CloudFormation Designer

cfn-lint and third-party validation tools

AWS CDK (synthesizes into CloudFormation)

AWS SAM for serverless applications

CI/CD pipelines with CodePipeline or GitHub Actions

CloudWatch for monitoring stack events

Terraform import/export via CloudFormation templates

Split templates into modular nested stacks

Use parameters and mappings for dynamic deployment

Leverage Change Sets before updates

Automate stack validation with cfn-lint

Integrate CloudFormation into CI/CD pipelines

Debugging template errors

Managing large templates

Cross-stack references

Ensuring rollback safety

Keeping up with new AWS service support in CloudFormation